Quote:
Originally Posted by Dennis
I think an x0.63 reducer will make an F11 system an F6.93 system?
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In theory... but I suspect it'd be quite different, depends what's in the image train. My F/6.3 takes my F/10 scope to about F/7.3
Quote:
Originally Posted by spearo
First real light.
Still working out sweet spots for balancing and guiding etc
5 min subs on the Helix and Sculptor
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Nice images for a first night. Perhaps a bit high on the contrast for NGC 253 as viewed on my screen, would prefer that backed off a little. Looks like you have quite a nice flat field there, I would've expected a lot more curvature. I only ever tried my 350D on my 12" LX once and had some curvature visible around the corners.